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I 4MM A. MATHA AND J. F. LESKO.

BURGLAR ALARM AND LOCK. APPLICATION FILED Nov. I. I9I1.

Patented Aug. 26, 1919.

2 SHEETS-SHEET l.

Imm-n A. MATHA AND J. F. LESKO.

BURGLAR ALARM AND LOCK.

APPLICATION FILED NOV. l. 19H.

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ALBERT MATI-IA AND JAMES F. LESKO, OF CHICAGO, ILLINOIS.

BURGLAR-ALARM AND LOCK.

Specication of Letters Patent.

Iateilted Aug. 26, '1919.

Application filed November 1, 1917. Serial No. 199,640.

To all whom t may concern:

Be it known that we, ALnnirr MA'rilA and JAMES F. LnsKo, citizens of the United States, and residents of Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Burglar-Alarms and Locks, of which the following is a description, reference being had to the accompanying drawings, which form a part of our specification.

Our invention relates more particularly to a device which may be readily applied to any door-casing or jamb and preferably in proximity to the usual lock of the door to operate in conjunction therewith.

The invention contemplates an alarm which will be set in operation or sounded either through the manipulation or turning of the door-knob and therefore in the withdrawal of the latch-member or bolt operated by the knob; or it may be set in operation through the movement or throwing of the lock-bolt or member Vinduced by manipulation of the lock-key; or where the ordinary style of lock is used, the alarm may be set in operation by the movement of both the knob-actuated latch-member and the keyoperated bolt.

The invention also contemplates a construction which will provide an auxiliary or safety bolt adapted to be thrown into locking or bolting position when the usual or regular locking bolt of the door has been thrown by a suitable key; the actuation of the mechanism, through movement of the regular door-lock or bolt causing the alarm to be sounded and the safety or supplemental bolt to be shot so that opening of the door will be prevented.

The operation and advantages of our invention will be readily comprehended from the following detailed description of the exemplification illustrated in 4the accompanying drawings wherein Figure 1 illustrates an embodiment of our invention in perspective, applied to a doorcasing or jamb, with portions of the case or housing broken away to disclose certain of the internal mechanisms or elements.

Fig. 2 is a cross sectional plan view taken just above the bell of the alarm.

Fig. line 3--3 of Fig. 2 looking in the 'direction of the arrows.

Fig. 4 illustrates the mechanism in eleva- 3 is a sectional View taken on the.

tion with the front plate of the housing and alarm mechanism removed.

Fig. 5 is a perspective view of the mechanism seen looking to the left from line 5--5 in Fig. 4.

Fig. 6 is a perspective view of the mechanism looking to the right from line 5-5 in Fig. 4.

Fig. 7 is a detail sectional view taken on the line 7-#7 of Fig. 4 looking downwardly.

The exemplification chosen to illustrate our invention is shown in connection with an ordinary well-known type of lock, with which the door-casing or jamb is provided with an escutchcon plate provided with the usual slots for the reception of] the latch member operated by the knob and the lockbolt controlled by the key. In the specific exemplication, the operating mechanism is inclosed in a suitable housing or casing 10, preferably of sheet metal, adapted to be secured to the door jamb, as for example by the screws 11 which pass through the flanges 12, 12 of the housing; the flanges 12 being adapted to overlap the sides of the doorjamb A. The device is preferably secured on the door-jamb in proximity to the escutchcon plate B which covers one or more slots in the door-j amb; the escutchcon plate being provided with the slot or opening 13 adapted to receive the ordinary lock-latch, while the other opening or slot 14: is adapted to receive the usual lock-holt.

In its specific form, the device comprises an ordinary spring-controlled alarm bell, shown at 15 in Figs. 1 and2; the alarm or bell shown being of the well known type usually known as a bicycle-bell, wherein the spring is wound and placed under tension by turning the bell proper. The spring is incased in the barrel or shell 16, and the tapper or knocker 17 is given vibratory movement against the rim of the bell proper through the action of the star wheel 18 actuated through suitable pinions controlled by the spring; the star-wheel 18 being adapted to have slight frictional contact with the double dog or pallet 19 to which the tapper or knocker 17 is secured. The tapper or knocker 17, and its escapement member or pallet 19, are held in frictional holding contact with the star-wheel 18 by means vof a flat spring 20, secured in any convenient way to one of the walls of the alarm mechanism, which passes beneath the arm of the tapper 17 as clearly shown in Fig. 1.

As the alarm mechanism shown is of a well known construction, and per se forms no part of our invention, a more specific or detailed description of this part of the mechanism need not be entered into, except to say that instead of employing a spring-actuated bell, an electrically operated alarm may be employed and as readily applied as the construction illustrated.

The spring member or knocker-holdcr element 2O has its free end bent forwardly, as shown at21, soas -to be engaged by the iingers or prongs 22 and 23, preferably formed integral* with the link-members 24 and 25, respectively.

The links 24 and 25 are slidably mounted in,y the casing or housing' 10, having their Vforward ends pivotally connected at 26 and 27 to the rock-levers 28 andv 29, respectively. They rock-levers 28V and 29 have their ends bent in the-angular manner shown in Fig. 1 with-thefree ends thereof given a crank formation--which arel adapted toextend into the paths of thedock-latch and lock-bolt, respectively; the levers or members 28 and 29 eX- tend through the rear wall of the casing 10 and'throughl suitable grooves in the doorjamb which connect with the socket in the door-jamb; the grooves being such that members 28 and 29 may oscillate or rotate about -their a-Xes. Y

The opposite ends of'links or members 24 and? 25 are preferably shown slightly reduced; see Figs 4' and'', and these ends are each providedwith a coilspring 30 and 31, respectively. One end' of spring 30 is secured to member y24, while the other end is securedtol a bell-crank lever 32 which is pivoted" at 33 on the rear wall of the shell or casing, with the free end of the bell-crank lever 32 open-ing 34 in the'end wall of the housing or casing. The spring 31 Vhas one end secured to member 25 and the other end secured to bell-crank lever 35 which is pivoted' at 36 to the casing, with the free end of the lever 35 disposed through a suitable slot 37 in the end wall `of the casing.

At' suitable points, intermediate of their ends, both links or members 24 and 25 are provided with small angul'arly disposed lugs 38V and'39, respectively, see F igs. 4 and 5, whichare adaptedl to engage with an arm orfmember140'. The member 40is preferably made? separate from and adjustably securedk tol they tumblerI or member 41 pivoted at 42' to the wall of the casing; The member 41 is shown 'provided' with the upwardly disposed angular portion, see Figs. 4" and 5, having'.lug-s143` between which-member 4'0 is held;- t'he mem-ber 40 being provided with an elongated-slot atits `lower end? forthe passa ge'r of' al suitableK `set-screw whereby extending through a suitable slot or with a recess at of pawlf 57 extends through member 40 is maintained in its adjusted po sition, so that arm 40 may be raised or loweredso as to come into the path of the lug 38 and lug 39 or simply the latter. With the member 40 in the position shown in Figs. 4 and 5, it will merely be engaged by the lug 39 of link member' 25, while lug 38 of link member 24 is free to pass thereover. The member 41 is controlled by the action of a suitable spring 45 which, in the drawings, is shown wound about a post 46 on the rea-r wall of the casing, with one end bearing against the boss or lug 47 formed on the wall of the casing, while the other end may be secured to-member 41 so as to insure positive relation with member 41; the spring exerting downward pressure on the forward end of member 41, thereby Vmaintaining it in holding engagement with an auxiliary bolt-member 48.

Bolt-member 48 is slidably mounted in the casing 10, and held in' place by a suitable guide-way 49,' the forward end of the bolt member being adapted to pass through a suitable opening, as at 50, in the'fro-nt end of the casing, see Figs. l and 4. The rear end of bolt-member 48 is shown preferably terminating n-a reduced or pin portion, see Fig. 4, to receive and guide an eXpansible coily spring 51, the other end whereof is shown encircling a boss 52 formed integral with the rear end of the casingA It: is evident from the construction shown that bolt member 48 willcompr'ess the spring 51 whenl the bolt-member is in its normal or retracted position, as shown in Fig. 4, so that the bolt-memberwill at allv times be under spring pressure and made to slide forwardly through the slot 50 in the forward end of the shell, as soon as it has been released through `proper movement of tumblerV member 4l. Member 41 has its forward end bent, as shown lug 54 on the upper Vside of bolt member 48, thereby holding bolt member 48 againstV the outward pressure of spring 51; .Y The bolt member 48- is shown providedY 55 preferably' Vadjacent the forward end thereof adapted to` receive a port-ion of a pawl 5G whichfispivoted at 57` to the frontend of the casing so as to swing transversely of the casing.. The lower end a slot-58 inthe bottom of the casing, see Figs. 4 and 5, to enable it to be manipulated from vthe casing exterior and to bemovedf` out of holding enga'gement' with bolt 48 when itis desired tor set-the deviceso'that the door' will `be locked 'by bolt 48 in the event that thev bolt ofthe doorllock has been withdrawn or manipulated by a suitable key from the doonexterior,

lVith the levers 32' and-l 35' in the positions shown in Figs. 4 and 6, namely in afp'ositionwherebysprings 30 `andr'BI- willi bel comfat 53, to engage with ay pressed which forces link-members 24 and 25 forwardly, no tripping or releasing aetion will result by any movement of either the door-latch or lock-bolt, or both. In order to Set the mechanism, levers 32 and 35, either one or both as desired, must be shifted about their respective pivotal points so as to distend their respective springs 30 and 31 and thus apply pulling action on the link members 24 and 25, respectively.- A pulling action on links 24 and 25, in the direction of springs 30 and 31, will cause the rock-levers or trip members 28 and 29 to he rotated on their' axes in a direction which will force the free crank portions toward the front of the slot-ways or openings 13 and 14 in the escutcheon plate member B; in other words will force the crank end portions of the members or rock-levers 28 and 29 into firm engagement with the latch member and the lock-bolt, respectively, and thus cause the crank portions of the levers to move'into the path ofthe knob operated latch-member of the door-lock and the locking bolt when the latter are withdrawn from their respective openings or slots. As is apparent, the crank ends of the rocklevers will be yieldingly held in the paths of the latch member and bolt so that the reck-levers will be forced back to normal positions when the door is closed and the latch replaced or the locking bolt returned to its socket. In other words, the device having `once been set, this condition will automatically maintain or be restored when the latch-member and locking bolt are returned to their slots.

When the device is installed, the escutchcon plate B is first removed and the doorjamb provided `with i grooves at proper' points so as to be covered by the plate B when it is replaced, so that rock-levers 28 and 29 will not be accessible from the doorexterior. With `the device in position and the `rock-levers inthe condition just described, the moment the knob of the door is turned so as to withdraw the latch-member from its slot 13, rock-lever 28, being under the influence of `spring 30, will rock on its axis, with. the crank end portion following the direction of movement of the latchmember, thereby permitting link 24- to be drawn rearwardly by its spring 30,` causing lug 22 on link 24 to come into operative' engagement with the knocker-.holding element or spring 20, so as to depress the same out of holding engagement with the knocker 17 andthereby allow it to be operated through the action of the star wheel 18 and pallet 19,

causingan` alarm to lbe sounded the moment the knob ofithedoor has been turned to release the latch. y i

On the other hand, if the door has been locked, and it is ,desired to set the alarm in thepe'vent of any movement of ,the `locking shaft28 orfshaft 29,

bolt, then lever 35 is oscillated downwardly in Fig. 4 so as to place spring 31 under tension and exert a pull on link 25, which imparts rocking movement to member 29 and holds the crank end portion of the latter in firm yielding engagement with the end of the bolt. The moment the bolt has been withdrawn from its socket in the escutcheon plate B, member 29 will rock on its axis, causing the free end or crank portion to follow the direction of movement of the bolt, while link-member 25 will move to the rear of the shell or casing 10 in the direction of the pull exerted by spring 31; such movement of lilik 25 will cause its lug 23 to be brought into striking engagement with the knocker-holding element 2O and depress the latter out of holding engagement with the knocker, allowing` the `operation thereof through the action of the escapement as previously described and the alarm sounded; the bell continuing to ring as long as the mechanisms remain in the positions just described; in other words until the bolt has been shot into place so as to again return lever 29 and link 25 to normal or set position.

Should it be desired to have the auxiliary locking mechanism operate-either when the latch has been withdrawn through a proper turning of the knob, or when the bolt of the lock has Ibeen withdrawn,-pawl 56 is moved out of holding engagement with bolt 48, so that reciproeation of either link 24 or link 25, or both, thro-ugh the pulling action of their respective springs, will cause the lug 38 on link 24 or lug 39 on link 25, or both (provided member 40 has been adjusted or raised so as to come into the path of both lugs) to come into striking engagement with member 40 and thereby tilt the spring-'controlled member 41 so as to raise it out of the path of lug 54 on bolt 48 and thereby allow the compressed spring 51 to immediately force bolt 48 outward and into the path 110 of the door and prevent the same being opened. It will be understood, of course, that the auxiliary or safety lock 48 is set or placed in inoperative position by proper movement of pawl 56 when the occupants in- 115 tend to leave the premises, during which period levers 32 and 35, either one or both, are set so that an alarm will be sounded without causing bolt 48 being released to prevent `the occupant entering.

In vorder to adapt the device to different styles of locks, as forexample a Yale leek where a single latching element is employed, the crank-ends of either rock member or or both, are shown re- 125 movably secured at59 to the remainder of the shaft, as two crank-arms vwill not be needed with'locks vof that character. The entire rockI shaft if desired may be made removable Aand. thus` ebviate `the necessity of 18e f oscillatingly mounted' members' providing more than 'one groove oi-I channel in the-door-jamb. It is evident also that an electrically' con-'- trolled'alarm may be employed in'steadofa spring-controlled alarm, in' whihh event the holding member' 2Ov constitute the cir'- cuit-controlling or contact-forming membei; the invention being-1 readily adapted' te Yein-1er form of automatic alarm'mechanism.

lVe have shown and describeda simple forni of the invention land its adaptation to a door provided with a usual type oflcol,V employing a' lato-hing niemlberand a lecl'ingV b'olt5'altho1igh it is evident that Where the lock is merely providedv with a single latching or locking element but one set of alarm actuating' elements need' ibe employed; the' invention being readily' adaptable to difter-l ent siti'iations and therefore capable otha'ving expression in somewhat different mechanical form wthou howsver,v departing' from the spirit ofthe invention.

l. A device of the' class d'es'crilbledL oomprising a spring-actuated element: adapted to extend into the path of the labelling" member of a lock and in yielding relation therewith so as to follow the" 'li'1" ,`ction'V of travel Iof Said l whereby' said controlled', yan antemano alarm mechanism;

*mea-ns' intermediate of' the' alarm mechanism and said spring-act'uated element whereby' operation of` the alarm mechanisn'r is' controlled;` ands/' anf 'auXiliaI-"y ldckingjv member" adapted to' 'be' actuated when said springfaetuateid element is pemnitted te nieve by the withdrawal ofk the latchin'g'member' of the lock fromlatehingfpositir. Y

2'. A device' ofthe class described,A comprising a pair of" o'scillatinglymounted members adjaflitedy `to respectively` extend into the paths of the latching'member'ad' 4 5' boltmember of a-lock, separate spring-con'- tro'l'lfed meansfor eac tioned means 4and s'a'i'd ala-rm mechanismj whereby the' alarm mechanism is' permitted to" operate when either one or' both" of said' i aI Perllrl'V ted to move bythe withdrawalof the latching member orV the' `lockingbolt;V n

3'. A device of the class described; comi prisin'g means adapted to yieldinfglyextend mentioned letbhine member; ma''s spring-actuated element is" i 0f' Seid' osclltnsly mounted t members whereby the oscillatingly' dfto move therewith,

means@ whereby said auxiliary bolt may' be' contrelled.

4L A device p risi'ng spring-'controlled means arranged' to extend' into the path of the lat-ching element of a lock and' be controlled; thereby, automatic alarm mechanism adapted to be` controlled by said means when the` latter functienates' through the withdrawal of the' latch'ingelement of thelock7 a spring-controlled anXiliary-bolhand means intermediate ofthenirst mentioned means and b o'lt whereby the latter is releasedwhenthe i Y means function ate's' through the withdrawal of the latching element of thelck V dev'iee of the class' described;l lcoma rock-shaft, one end whereof is.

i l:to extendin'tb thepath of theglatching element ofthe'locl, means whereby the rock-'shaft is'v cont'rlled .and made to' func'- ti'onate ,whenthe' la-t'ohing element is withdrawn-v fioin; lathing' position; an anXiliary holt; and means intermediate of the bolt and the first l`menti'cned means" whereby the bolt is'r'eleased and caused t'ofmove' into bolting psition., A

6': device' ofthe class described, compri-sing'a' rock-shaft, one end whereof is arranged in the path of the latchin'g Velement cfa lock, a spring-controlled member oper'- ativ'ely connected with said roch-shaft whereby' the latter is caused torroclv in the direction of movement of the latching eleadapte ment, aspiring-'controlled holt', and means" inter-mediate or said boit and the' Spring- 'controlled member whereby they b'olt is reby? the"V alarm is held againstA operation', v v

meansl intermediate of thel first mentioned of aie dass described, Cqmibo member' and said holding member whereby theflat-ter" is' moved outof holding-' position and-thealar1npermitted to operate when the first mentioned member isi permittedto move' Vthroughv withdrawal of the latching element,` and) an' auxiliary spring-actuated bolt adaptedto bereleased by the movement of first,mentionedmember;

oeeifnanngiyf meenten meister' le Se adapted to extend into the path of the latching element of a lock, a spring-actuated member operatively connected with the oscillatingly mounted member so as to cause the latter to oscillate when the latch element is withdrawn from latching position, automatic alarm mechanism, a holding member whereby the alarm is heldagainst operation, means intermediate of the spring-actuated member and said holding member whereby the latter is moved out of holding position and the alarm permitted to operate when the oscillatingly mounted member act-uates through the withdrawal of the latching element, means whereby the spring-actuated member may be controlled, a spring-controlled auxiliary bolt, and means intermediate of said bolt and spring-actuated member whereby said bolt is released when the oscillatingly mounted member moves with the latching element to unlatching position.

9. A device of the class described, comprising a rocking-member adapted to extend across'the path of the latching element of a lock, a reciprocating member operatively connected with said rocking-member, means whereby the reciprocating member is placed under spring pressure and the rocking member yieldingly maintained in contact with the latch member, automatic alarm mechanism, means whereby the alarm is held against operation, and means intermediate of the reciprocating member and said second mentioned means whereby the latter is actuated and the alarm mechanism released when the reciprocating member with the rocking-member is permitted to move through the withdrawal of the latching element.

10. A device of the class described, comprising oscillatingly mounted means adapted to extend across the path of the latching element of a lock, reciprocatingly mounted means operatively connected with said first means so as to control the same, means whereby said second means is placed under pressure and the first means thereby yieldingly forced into contact with the latching element and made to move therewith and the alarm mechanism thereby set, automatic alarm mechanism, and a member normally holding the alarm-sounding element of Said alarm mechanism against operation, said member being disposed in the path of a portion of said reciprocatingly mounted f means and adapted to be moved out of holding relation thereby when the oscillatingly mounted means follows the outward or unlatching movement of the latching element.

ALBERT MATHA. JAMES F. LES-KO. Witnesses:

Grenen HEIDMAN, F. A. FLoRnLL.

Copies of this patent may be obtained for live cents each, by addressing the Commissioner of Patents, Washington, ZD. C. 

